Gypsy moth, Lymantria dispar, was first discovered in Michigan in 1954, Aerial spraying operations were conducted to eradicate gypsy moth infestations with synthetic insecticides (DDT, carbaryl, and diflubenzuron),
"Gypsy Moth (Lepidoptera: Lymantriidae): History of Eradication Efforts in Michigan, 1954-1981,"
The Great Lakes Entomologist: Vol. 15
, Article 10.
Available at: http://scholar.valpo.edu/tgle/vol15/iss3/10